DOCSLIB.ORG

Cephalopoda: Octopodidae): the Smallest Southwestern Atlantic Octopod, Found in Sea Debris

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

A new species of pygmy Paroctopus (Cephalopoda: Octopodidae): the smallest southwestern Atlantic octopod, found in sea debris Tatiana S. Leite ( [email protected] ) Universidade Federal de Santa Catarina Centro de Ciencias Biologicas https://orcid.org/0000-0001-9117-9648 Erica A.G. Vidal Universidade Federal do Parana Setor de Ciencias da Terra Françoise Dantas Lima Universidade Federal do Rio Grande do Norte Centro de Biociencias Sergio M.Q. Lima Universidade Federal do Rio Grande do Norte Centro de Biociencias Ricardo M Dias Universidade Federal do Sul da Bahia Giulia A. Giuberti Universidade Federal do Estado do Rio de Janeiro Davi De Vasconcellos Universidade Federal do Rio Grande Jennifer A. Mather University of Lethbridge Manuel Haimovici Universidade Federal do Rio Grande Original Paper Keywords: Paroctopus, octopus Posted Date: January 29th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-172910/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Marine Biodiversity on July 27th, 2021. See the published version at https://doi.org/10.1007/s12526-021-01201-z. Loading [MathJax]/jax/output/CommonHTML/fonts/TeX/fontdata.js Page 1/27 Abstract The new species, Paroctopus cthulu sp. nov. Leite, Haimovici, Lima and Lima, was recorded from very shallow coastal waters on sandy/muddy and shelter- poor bottoms with natural and human-origin debris. It is a small octopus, adults are less than 35 mm mantle length (ML) and weigh around 15 g. It has short to medium sized arms, enlarged suckers on the arms of both males and females, large posterior salivary glands (25 %ML), a relatively large beak (9 % ML) and medium to large mature eggs (3.5 to > 9 mm). The characteristics of hatchlings of two brooding females, some of their anatomical features, and in-situ observations of their behaviour are a clue to the life history of it and closely related pygmy octopuses. The Bayesian phylogenetic analysis showed that Paroctopus cthulu sp.nov. specimens grouped in a well-supported clade of Paroctopus species, separate from P.joubini and P. cf mercatoris from the Northwestern Atlantic . The description of this new species, living in a novel habitat of human debris in shallow water off Brazil, offered an opportunity not only to evaluate the relationship among the small octopuses of the western Atlantic, Caribbean and eastern Pacic, but also their adaptation to the Anthropocene period. Introduction The pygmy octopuses are smallbodies species of Octopodidae, some of which mature as small as 20 mm dorsal mantle length (around 100 mm total length). Most of them are currently placed in the genus Paroctopus. This genus was originally proposed by Naef (1923) based on the relatively large size of the eggs of Paroctopus digueti Perrier & Rochebrune, 1894 (capsule length 10 mm) . Two years later, Grimpe (1925) erected the genus Pseudoctopus based on the same morphotype species, citing the single attachment of eggs, as well as the egg size. Naef discarded the genus name Paroctopus in 1928, apparently because he felt it was not valid, although he did not discuss the reasons for such a decision. Robson (1929) resurrected the name, but had reservations about erecting a new genus based solely on egg size. In an attempt to validate Naef’s genus, he amplied the diagnosis with several additional characters, namely: 1) possession of relatively long copulatory organ (Ligula length index LLI 720); 2) short arms and 3) squat, bursiform body. Pickford (1945, 1946) initially accepted the validity of the genus in her evaluation of the octopodine fauna of the western Atlantic. However, she later rejected the name when discussing the generic placement of the large-egg species, Octopus bimaculoides Pickford & McConnaughey, 1949. As currently understood, the genus is represented by a transisthmian geminate species complex endemic to tropical and subtropical waters in the Americas (see Berry 1953, Nesis, 1975, 1978, Lima et al.2020). This complex includes Paroctopus digueti (type species) along the tropical eastern Pacic, and two morphotypes: one with smaller eggs (< 4 mm) and the other with larger eggs (>5 mm) in the Northeastern Atlantic, Caribbean Sea and Gulf of Mexico (Forsythe and Hanlon, 1980; Tiffany et al.2006). Due to their small size, the pygmy octopuses have been used in laboratory experiments on mating behavior (Mather 1978; Cigliano 1995); reproductive biology and growth (Opresko and Thomas, 1975) and ontogeny of behavior, habitat use and distribution (Mather 1980a, 1980b, 1982a, 1982b, 1984). When it comes to the Northwestern Atlantic and Caribbean Sea, the pygmy taxonomy is mixed up. In the Caribbean Sea (St. Thomas/ Virgin Island), the smallegged species was described as Octopus joubini Robson 1929 (Robson 1929) and a broad literature citing this species is available (Pickford 1945, Boletzky and Boletzky 1969. Forsythe 1984). However, some important publications cited the largeegged species also under the name O. joubini (Opresko and Thomas 1975, Hanlon 1983). Other studies refer to a pygmy octopus with large eggs from the Gulf of Mexico (Dry Tortugas and Tampa Bay) as Octopus mercatoris Adam, 1937 (Forsythe and Hanlon 1980, Forsythe and Toll 1991, Tiffany et al. 2006), despite the fact that the holotype of O. mercatoris is a female bearing relatively small eggs (3 mm) (Voss and Toll 1998). In fact, some authors considered the smallegged species, O. joubini and O. mercatoris, as possible Paroctopus (Voss and Toll1998, Jereb et al.2014, Lima et al.2020), while the largeegged species is still undescribed. The available literature on pygmy octopuses from the Southwestern Atlantic is scarce and not less confusing. Haimovici (1985) registered as O. joubini a small juvenile collected in a tide pool off Vitória, Espirito Santo State. Perez and Haimovici (1991) designated as O. joubini a lot of small octopods (MZUSP 27028) collected in São Paulo State (23o 30´S) in their list of cephalopod species deposited at the Zoology Museum of the University of São Paulo. In recent years, several small adult octopuses with stocky bodies and medium sized arms, some of them bearing the enlarged suckers and a medium size ligula, that ts the description of the Paroctopus type species, were collected in shallow waters of Santa Catarina and Rio de Janeiro states, along the temperate Brazilian coast. Live specimens were observed using human garbage as shelters. They included two brooding females with medium to relatively large eggs, which enabled the descriptions of eggs, embryos and hatchlings and thus provided biological and ecological information on the early stages of the life cycle. Morphological features and body proportions of eggs and hatchlings in relation to those of the adults are important for inferences about the developmental mode – planktonic or benthic – of octopus hatchlings, providing key information on life history traits. Genetic and morphological characterization of these specimens does not t with the available information on the described species of the genus and support their description as a new species. Additional images and videos provided valuable information on their behavior. Herein, we provide a detailed and integrated description of a new species of Paroctopus collected from sea garbage, including descriptions of adult males and females, eggs, embryos and hatchlings, along with molecular data and analyses. Materials And Methods Collection samples A total of 12 specimens (six adult males; three adult females and three juveniles) was collected in the shallow coastal waters of Rio de Janeiro municipality and Ilha Grande continental island (Angra dos Reis municipality) in Rio de Janeiro (RJ) State, and in Porto Belo municipality in Santa Catarina (SC) State, Central and Southern Brazil (Fig. 1a and b). Most of the RJ specimens were collected at depths shallower than 5 m by hand, during snorkeling or SCUBA diving on rubble or sandy bottoms near the rocky coast. The temperature varied from 19 to 26 o C. The specimens were collected by sorting solid garbage Loading [MathJax]/jax/output/CommonHTML/fonts/TeX/fontdata.js Page 2/27 found on the sea bottom, including metallic cans, glass bottles and plastic objects such as snorkeling mouthpieces, among others. No specimen was found inside empty shells, although we looked for them, also 9 divers. Two females with eggs were found, one spawned inside a snorkeling mouthpiece and the other in a metal beer can. Morphological data Most specimens were xed in 10% formalin and preserved in 70% ethanol. Measurements, counts and indices followed Roper and Voss (1983) and Huffard and Hochberg (2005). Sucker counts included all suckers in each arm, rather than only those on the basal half. The following abbreviations are used for measurements and indices: AFL: left arm formula, AFR: right arm formula, ALI: arm length index (arm length/ML × 100), ASC: arm sucker count (number of suckers of each designated arm), AWI: arm width index (arm width at the widest point on stoutest arm/ML × 100), CaLI: calamus length index (calamus length/LL ×100), FLI: funnel length index (funnel length/ML × 100), FFLI: Free funnel length index (free funnel length/funnel length x 100); GiLC: gill lamellae count per demibranch, HLI: hectocotylus length index (hectocotylus length/hectocotylized arm length x100; HWI: head width index (head width/ML × 100), LLI: ligula length index (ligula length/HL × 100), ML: dorsal mantle length,
Recommended publications
  • Diversity of Benthic Assemblages of the Río De La Plata Estuary and Adjacent Marine Zones

    Diversity of Benthic Assemblages of the Río De La Plata Estuary and Adjacent Marine Zones

    BENTHIC DIVERSITY OF THE RÍO DE LA PLATA ESTUARY AND ADJACENT MARINE WATERS DIEGO A. GIBERTO SUPERVISOR: CLAUDIA S. BREMEC PNUD Project/Gef RLA/99/G31 2003 1 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ BENTHIC DIVERSITY OF THE RÍO DE LA PLATA ESTUARY AND ADJACENT MARINE WATERS Report __________________________________________________________________ AUTHOR: DIEGO A. GIBERTO SUPERVISOR: CLAUDIA S. BREMEC __________________________________________________________________ Summary The main objectives of this report are to analyze the infralitoral benthic assemblages of the Río de la Plata estuary and adjacent marine zones, and establish broad patterns of species diversity throughout the study area. Species richness was utilized as a measure of diversity. The report was divided in two major approaches: the analysis of an historical background and the EH-09-99 survey. The taxonomical groups that contributed with the major number of species were the mollusks, crustaceans, polychaetes, echinoderms and coelenterates. A classical gradient of increasing species richness from estuarine to marine waters was found. Also, few species were found inhabiting both estuarine and marine waters. The species richness values were high at the continental shelf and the coastal marine environments. The highest number of species was recorded in mussel beds and coarse-sandy bottoms marine assemblages. The irregular pattern of species richness found in marine waters could be due to the presence of different heterogeneous bottom types all over the study area. It is concluded that the available information about benthic communities inhabiting the study area is scarce. In addition, a large portion of the studies were developed mainly on the marine zones < 50 m, while the estuarine zones and the marine zones > 50 m are underestimated.
  • Reproductive Strategy of Deep-Sea and Antarctic Octopods of the Genera Graneledone, Adelieledone and Muusoctopus (Mollusca: Cephalopoda)

    Reproductive Strategy of Deep-Sea and Antarctic Octopods of the Genera Graneledone, Adelieledone and Muusoctopus (Mollusca: Cephalopoda)

    Vol. 18: 21–29, 2013 AQUATIC BIOLOGY Published online January 23 doi: 10.3354/ab00486 Aquat Biol Reproductive strategy of deep-sea and Antarctic octopods of the genera Graneledone, Adelieledone and Muusoctopus (Mollusca: Cephalopoda) Vladimir Laptikhovsky* Falkland Islands Government Fisheries Department, Stanley FIQQ 1ZZ, Falkland Islands ABSTRACT: Reproductive systems of spent brooding octopodid females of Muusoctopus longi- brachus akambei, Adelieledone polymorpha and Graneledone macrotyla (Eledoninae) were col- lected in Southwest Atlantic and Antarctic waters. Their study demonstrated that the size distribu- tion of post-ovulatory follicles (POF) is mostly unimodal, suggesting that they only lay 1 batch of eggs. These data, together with a reevaluation of the literature, revealed that deep-sea and polar benthic octopods are generally not multiple spawners. Females spawn a single egg mass simulta- neously or as a series of several consequent mini-batches separated by short periods of time, mak- ing it difficult to distinguish them by either size or condition of their POF. Analysis of the length−frequency distribution of POF is a useful tool to reconstruct the spawning history of brood- ing females of cold-water octopods. KEY WORDS: Octopus · Spawning · Post-ovulatory follicle · POF · Reproductive strategy · Deep sea · Antarctic Resale or republication not permitted without written consent of the publisher INTRODUCTION 2008). Growth of ovarian eggs is generally synchro- nous, although in maturing females the oocyte size Most benthic octopods brood a single egg mass, and distribution might be bimodal or polymodal (Kuehl the female dies as the eggs hatch. This egg mass 1988, Laptikhovsky 1999a, 2001, Önsoy & Salman (clutch) might be laid in one bout or in several consec- 2004, Bello 2006, Barratt et al.
  • Reproductive Biology of Octopus Tehuelchus D'orbigny, 1834

    Reproductive Biology of Octopus Tehuelchus D'orbigny, 1834

    THE NAUTILUS 125(3):150–158, 2011 Page 150 Reproductive biology of Octopus tehuelchus d’Orbigny, 1834 (Cephalopoda: Octopodidae) in southern Brazil Jonatas Alves Manuel Haimovici Graduate Program in Biological Oceanography Institute of Oceanography Institute of Oceanography Federal University of Rio Grande Federal University of Rio Grande CEP 96201-900 Rio Grande, BRAZIL CEP 96201-900 Rio Grande, BRAZIL [email protected] [email protected] ABSTRACT distributed species, with small body size, larger eggs, low fecundity and benthic development, such as Octopus Octopus tehuelchus is a small octopus endemic to subtropical tehuelchus (Pujals, 1982; Iribarne, 1991; Re´, 1998). This and temperate waters of the southwestern Atlantic continental last species occurs from subtropical southeastern Brazil shelf. Its reproductive biology was studied by examining 319 individuals, measuring 20 to 79 mm mantle length (ML), col- (20 S) (Haimovici and Perez, 1991) to the temperate habitats of San Jorge Gulf, in northern Patagonia, Argen- lected between 1979 and 2009 along the coast of southern Brazil. Females are more numerous in shallower waters and tina (43 S) (Re´ and Simes, 1992; Re´, 1998). attain larger size than males. Fully mature males and females In southern Brazil, Octopus tehuelchus occurs over were observed in all seasons and mean mantle length at matu- the continental shelf, as deep as 100 m depth and usu- rity was 46 mm for females and 27 mm for males. The number ally associated with gastropod shells (Haimovici and of intraovaric oocytes of maturing females ranged from 20 to Andriguetto, 1986). Due its low abundance in commer- 448 and was positively correlated with female size.
  • Phylogenetic Relationships Among Octopodidae Species in Coastal Waters of China Inferred from Two Mitochondrial DNA Gene Sequences Z.M

    Phylogenetic Relationships Among Octopodidae Species in Coastal Waters of China Inferred from Two Mitochondrial DNA Gene Sequences Z.M

    Phylogenetic relationships among Octopodidae species in coastal waters of China inferred from two mitochondrial DNA gene sequences Z.M. Lü, W.T. Cui, L.Q. Liu, H.M. Li and C.W. Wu Zhejiang Provincial Key Laboratory of Marine Germplasm Resources Exploration and Utilization, College of Marine Sciences, Zhejiang Ocean University, Zhoushan, China Corresponding author: Z.M. Lü E-mail: [email protected] Genet. Mol. Res. 12 (3): 3755-3765 (2013) Received January 21, 2013 Accepted August 20, 2013 Published September 19, 2013 DOI http://dx.doi.org/10.4238/2013.September.19.7 ABSTRACT. Octopus in the family Octopodidae (Mollusca: Cephalopoda) has been generally recognized as a “catch-all” genus. The monophyly of octopus species in China’s coastal waters has not yet been studied. In this paper, we inferred the phylogeny of 11 octopus species (family Octopodidae) in China’s coastal waters using nucleotide sequences of two mitochondrial DNA genes: cytochrome c oxidase subunit I (COI) and 16S rRNA. Sequence analysis of both genes revealed that the 11 species of Octopodidae fell into four distinct groups, which were genetically distant from one another and exhibited identical phylogenetic resolution. The phylogenies indicated strongly that the genus Octopus in China’s coastal waters is also not monophyletic, and it is therefore clear that the Octopodidae systematics in this area requires major revision. It is demonstrated that partial sequence information of both the mitochondrial genes 16S rRNA and COI could be used as diagnostic molecular markers in the identification and resolution of the taxonomic ambiguity of Octopodidae species. Key words: Molecular phylogeny; Mitochondrial DNA gene sequences; Octopodidae species; COI; 16S rRNA Genetics and Molecular Research 12 (3): 3755-3765 (2013) ©FUNPEC-RP www.funpecrp.com.br Z.M.
  • Octopus Consciousness: the Role of Perceptual Richness

    Octopus Consciousness: the Role of Perceptual Richness

    Review Octopus Consciousness: The Role of Perceptual Richness Jennifer Mather Department of Psychology, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada; [email protected] Abstract: It is always difficult to even advance possible dimensions of consciousness, but Birch et al., 2020 have suggested four possible dimensions and this review discusses the first, perceptual richness, with relation to octopuses. They advance acuity, bandwidth, and categorization power as possible components. It is first necessary to realize that sensory richness does not automatically lead to perceptual richness and this capacity may not be accessed by consciousness. Octopuses do not discriminate light wavelength frequency (color) but rather its plane of polarization, a dimension that we do not understand. Their eyes are laterally placed on the head, leading to monocular vision and head movements that give a sequential rather than simultaneous view of items, possibly consciously planned. Details of control of the rich sensorimotor system of the arms, with 3/5 of the neurons of the nervous system, may normally not be accessed to the brain and thus to consciousness. The chromatophore-based skin appearance system is likely open loop, and not available to the octopus’ vision. Conversely, in a laboratory situation that is not ecologically valid for the octopus, learning about shapes and extents of visual figures was extensive and flexible, likely consciously planned. Similarly, octopuses’ local place in and navigation around space can be guided by light polarization plane and visual landmark location and is learned and monitored. The complex array of chemical cues delivered by water and on surfaces does not fit neatly into the components above and has barely been tested but might easily be described as perceptually rich.
  • Husbandry Manual for BLUE-RINGED OCTOPUS Hapalochlaena Lunulata (Mollusca: Octopodidae)

    Husbandry Manual for BLUE-RINGED OCTOPUS Hapalochlaena Lunulata (Mollusca: Octopodidae)

    Husbandry Manual for BLUE-RINGED OCTOPUS Hapalochlaena lunulata (Mollusca: Octopodidae) Date By From Version 2005 Leanne Hayter Ultimo TAFE v 1 T A B L E O F C O N T E N T S 1 PREFACE ................................................................................................................................ 5 2 INTRODUCTION ...................................................................................................................... 6 2.1 CLASSIFICATION .............................................................................................................................. 8 2.2 GENERAL FEATURES ....................................................................................................................... 8 2.3 HISTORY IN CAPTIVITY ..................................................................................................................... 9 2.4 EDUCATION ..................................................................................................................................... 9 2.5 CONSERVATION & RESEARCH ........................................................................................................ 10 3 TAXONOMY ............................................................................................................................12 3.1 NOMENCLATURE ........................................................................................................................... 12 3.2 OTHER SPECIES ...........................................................................................................................
  • Giant Pacific Octopus (Enteroctopus Dofleini) Care Manual

    Giant Pacific Octopus (Enteroctopus Dofleini) Care Manual

    Giant Pacific Octopus Insert Photo within this space (Enteroctopus dofleini) Care Manual CREATED BY AZA Aquatic Invertebrate Taxonomic Advisory Group IN ASSOCIATION WITH AZA Animal Welfare Committee Giant Pacific Octopus (Enteroctopus dofleini) Care Manual Giant Pacific Octopus (Enteroctopus dofleini) Care Manual Published by the Association of Zoos and Aquariums in association with the AZA Animal Welfare Committee Formal Citation: AZA Aquatic Invertebrate Taxon Advisory Group (AITAG) (2014). Giant Pacific Octopus (Enteroctopus dofleini) Care Manual. Association of Zoos and Aquariums, Silver Spring, MD. Original Completion Date: September 2014 Dedication: This work is dedicated to the memory of Roland C. Anderson, who passed away suddenly before its completion. No one person is more responsible for advancing and elevating the state of husbandry of this species, and we hope his lifelong body of work will inspire the next generation of aquarists towards the same ideals. Authors and Significant Contributors: Barrett L. Christie, The Dallas Zoo and Children’s Aquarium at Fair Park, AITAG Steering Committee Alan Peters, Smithsonian Institution, National Zoological Park, AITAG Steering Committee Gregory J. Barord, City University of New York, AITAG Advisor Mark J. Rehling, Cleveland Metroparks Zoo Roland C. Anderson, PhD Reviewers: Mike Brittsan, Columbus Zoo and Aquarium Paula Carlson, Dallas World Aquarium Marie Collins, Sea Life Aquarium Carlsbad David DeNardo, New York Aquarium Joshua Frey Sr., Downtown Aquarium Houston Jay Hemdal, Toledo
  • Feeding Ecology of Enteroctopus Megalocyathus (Cephalopoda: Octopodidae) in Southern Chile Christian M

    Feeding Ecology of Enteroctopus Megalocyathus (Cephalopoda: Octopodidae) in Southern Chile Christian M

    Journal of the Marine Biological Association of the United Kingdom, 2008, 88(4), 793–798. #2008 Marine Biological Association of the United Kingdom doi:10.1017/S0025315408001227 Printed in the United Kingdom Feeding ecology of Enteroctopus megalocyathus (Cephalopoda: Octopodidae) in southern Chile christian m. ibanez~ 1 and javier v. chong2 1Instituto de Ecologı´a y Biodiversidad, Departamento de Ciencias Ecolo´gicas, Facultad de Ciencias, Universidad de Chile, PO Box 563, Santiago, Chile, 2Departamento de Ecologı´a Costera, Facultad de Ciencias, Universidad Cato´lica de la Santı´sima Concepcio´n, P.O. BOX 297, Concepcio´n, Chile In this research we studied the diet of Enteroctopus megalocyathus from three principal locations of the octopus fishery (Ancud, Quello´n and Melinka) in southern Chile. The gastric contents of 523 individuals, collected between October 1999 and September 2000, were examined and statistically analysed. Diet composition was described using detrended correspon- dence analysis and analysed as a function of predator gender, body size and fishing area. Food items were found in ~50% of the octopuses examined and a total of 14 prey items were recognized. The diet of E. megalocyathus consisted primarily in brachyuran and anomuran crustaceans, fish and conspecifics. The diet differed in composition between fishing zones and mantle length of the specimens and size of octopuses varied between locations. After adjusting for octopus mantle length, diet composition was found to be different between fishing areas. Large octopuses fed on large crabs at Ancud, while in Quello´n and Melinka small octopuses fed mainly on small crustaceans. There were no differences in prey composition between the gender and the size of octopuses was a better predictor of the variance in the diet composition (16%) than the fishing zone (6%).
  • Cephalopoda, Octopodidae) in the Southeastern Pacific Ocean Revista De Biología Marina Y Oceanografía, Vol

    Cephalopoda, Octopodidae) in the Southeastern Pacific Ocean Revista De Biología Marina Y Oceanografía, Vol

    Revista de Biología Marina y Oceanografía ISSN: 0717-3326 [email protected] Universidad de Valparaíso Chile Ibáñez, Christian M.; Pardo-Gandarillas, M. Cecilia; Poulin, Elie; Sellanes, Javier Morphological and molecular description of a new record of Graneledone (Cephalopoda, Octopodidae) in the southeastern Pacific Ocean Revista de Biología Marina y Oceanografía, vol. 47, núm. 3, diciembre, 2012, pp. 439-450 Universidad de Valparaíso Viña del Mar, Chile Available in: http://www.redalyc.org/articulo.oa?id=47925145011 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Revista de Biología Marina y Oceanografía Vol. 47, Nº3: 439-450, diciembre 2012 Article Morphological and molecular description of a new record of Graneledone (Cephalopoda, Octopodidae) in the southeastern Pacific Ocean Descripción morfológica y molecular de un nuevo registro de Graneledone (Cephalopoda, Octopodidae) en el Océano Pacífico suroriental Christian M. Ibáñez1, M. Cecilia Pardo-Gandarillas1, Elie Poulin1 and Javier Sellanes2,3 1Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile. [email protected] 2Departamento de Biología Marina, Facultad de Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile 3Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental (COPAS), Universidad de Concepción, Casilla 160-C, Concepción, Chile Resumen.- Los pulpos del género Graneledone habitan en aguas profundas y constituyen 8 especies reconocidas. Se realizaron análisis filogenéticos de 4 especies de Graneledone con 2 marcadores moleculares (16S y COI), y se informa sobre un nuevo registro de Graneledone para el Océano Pacífico frente a la zona centro-sur de Chile.
  • Listado De Especies De La Estadística Pesquera Nacional

    Listado De Especies De La Estadística Pesquera Nacional

    ESTADÍSTICAS DE LA PESCA MARINA EN LA ARGENTINA 2008-2013 LISTADO DE ESPECIES DE LA ESTADÍSTICA PESQUERA NACIONAL Listado de especies de la estadística pesquera nacional NOMBRE COMÚN NOMBRE CIENTÍFICO NOMBRE COMÚN NOMBRE CIENTÍFICO NOMBRE COMÚN NOMBRE CIENTÍFICO NOMBRE COMÚN NOMBRE CIENTÍFICO PECES CARTILAGINOSOS Torpedo1 Torpediniformes Lisa Mugil spp. Savorín Seriolella porosa 1 Bathyraja1 Bathyraja spp. Torpedo Discopyge Discopyge tschudii Merluza austral Merluccius australis Testolín Prionotus spp. 1 Cazón Galeorhinus galeus Torpedo puelcha Torpedo puelcha Merluza de cola Macruronus magellanicus Otros peces Chucho Myliobatiformes PECES ÓSEOS Merluza hubbsi Merluccius hubbsi MOLUSCOS 2 Dasyatis centroura, Abadejo Genypterus blacodes Merluza negra Dissostichus eleginoides Almeja Veneroidea Chucho Dasyatis Dasyatis hypostigma Anchoa de banco Pomatomus saltatrix Mero Acanthistius patachonicus Berberecho Trachycardium muricatum Myliobatis goodei, Anchoíta Engraulis anchoita Morena Iluocoetes fimbriatus Calamar Chucho Myliobatis Myliobatis freminvillii, Loligo sanpaulensis 1 Myliobatis sp. Atún albacora Thunnus alalunga Notothenia Nototheniidae de Sao Paulo Calamar Illex Illex argentinus Gatuzo Mustelus schmitti Atún aleta amarilla Thunnus albacares Palometa Parona signata Calamar Loligo Loligo spp Guitarra chica Zapteryx brevirostris Atún aleta azul Thunnus thynnus Pampanito Stromateus brasiliensis 1 Calamar Martialia Martialia hyadesi Guitarra grande Rhinobatos horkelii Atún barrilete Katsuwonus pelamis Papafigo Peprilus paru Calamar
  • Environmental Effects on Cephalopod Population Dynamics: Implications for Management of Fisheries

    Environmental Effects on Cephalopod Population Dynamics: Implications for Management of Fisheries

    Advances in Cephalopod Science:Biology, Ecology, Cultivation and Fisheries,Vol 67 (2014) Provided for non-commercial research and educational use only. Not for reproduction, distribution or commercial use. This chapter was originally published in the book Advances in Marine Biology, Vol. 67 published by Elsevier, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who know you, and providing a copy to your institution’s administrator. All other uses, reproduction and distribution, including without limitation commercial reprints, selling or licensing copies or access, or posting on open internet sites, your personal or institution’s website or repository, are prohibited. For exceptions, permission may be sought for such use through Elsevier's permissions site at: http://www.elsevier.com/locate/permissionusematerial From: Paul G.K. Rodhouse, Graham J. Pierce, Owen C. Nichols, Warwick H.H. Sauer, Alexander I. Arkhipkin, Vladimir V. Laptikhovsky, Marek R. Lipiński, Jorge E. Ramos, Michaël Gras, Hideaki Kidokoro, Kazuhiro Sadayasu, João Pereira, Evgenia Lefkaditou, Cristina Pita, Maria Gasalla, Manuel Haimovici, Mitsuo Sakai and Nicola Downey. Environmental Effects on Cephalopod Population Dynamics: Implications for Management of Fisheries. In Erica A.G. Vidal, editor: Advances in Marine Biology, Vol. 67, Oxford: United Kingdom, 2014, pp. 99-233. ISBN: 978-0-12-800287-2 © Copyright 2014 Elsevier Ltd. Academic Press Advances in CephalopodAuthor's Science:Biology, personal Ecology, copy Cultivation and Fisheries,Vol 67 (2014) CHAPTER TWO Environmental Effects on Cephalopod Population Dynamics: Implications for Management of Fisheries Paul G.K.
  • Octopus Insularis&lt;/Italic&gt; As a New Marine Model for Evolutionary

    Octopus Insularis</Italic> As a New Marine Model for Evolutionary

    © 2019. Published by The Company of Biologists Ltd | Biology Open (2019) 8, bio046086. doi:10.1242/bio.046086 RESEARCH ARTICLE Octopus insularis as a new marine model for evolutionary developmental biology Ernesto Maldonado1,*, Emma Rangel-Huerta1,2, Roberto González-Gómez3,4, Gabriel Fajardo-Alvarado3,4 and Piedad S. Morillo-Velarde4,5,* ABSTRACT of aquatic animal eggs and embryos guarantees the observation of Octopuses are intriguing organisms that, together with squids and every developmental stage using microscopy and allows detailed cuttlefishes, form the extant coleoid cephalopods. This group includes experimental analysis from the first cell division through to the many species that can potentially be used as models in the fields of formation of embryonic germ layers and organogenesis (Boletzky biomedicine, developmental biology, evolution, neuroscience and et al., 2006). Finally, small embryos allow reasonable sample sizes even for robotics research. The purpose of this work is to first to be tested together using multi-well plates to provide multiple present a simple method for maintaining Octopus insularis embryos experimental replicates at the same time, making them cost- under a laboratory setup. Second, we show that these embryos are effective animal models (Hill et al., 2005). suitable for detailed analyses of specific traits that appear during Coleoid cephalopods (octopus, squid and cuttlefish) exhibit the developmental stages, including the eyes, hearts, arms, suckers, largest nervous systems found among invertebrates (Young, 1971) chromatophores and Kölliker’s organs. Similar complex traits between and a sophisticated visual system controlling body color changes for cephalopods and vertebrates such as the visual, cardiovascular, communication, camouflage and mimicry (Hanlon et al., 2011; neural and pigmentation systems are generally considered to be a Robin et al., 2014).